Native Union Curve Dual Line Handset, model MM02U in black. Brand new in box.

Curved slim handset with base and connection for 2 lines, and holder for two mobile phones or a tablet.

From the manufacturer:

Reduces up to 99% of the radiation absorbed compared to direct use of your mobile phone

Twin 3.5mm jacks to plug directly into 2 devices

Twin retractable cable system

One touch button for pick-up/hang-up directly from the handset

Line switch button, noise reduction system, and universal holder suitable for 2 mobile phones or tablets.